Automatic bobbin-winder



(Model.)

O. BELL.

AUTOMATIC BOBBIN WINDER.'

NO. 377,421. Patented Pebi "7, 1888.

UNITED STATES PATENT. OFFICE..

` stoppage of the mechanism.

accompanying drawings, in which- The trigger 25 hasan` upward extension or -from the center to each side, and forms on one 'ment is well known, and needs no further de- VAuToMATlc BoBBlN-wlNDER.

sPfnoIr'IcATIoN'forming part of Letters Patent No. 377,421, ate February 7,1868.

Application filea March 14, 1887. serial Na. 280,908. (Model.) v i,

To all wlwmjt 77m1/ concern:

Be it known that I, CARLBELL, asubject of the Emperor of Germany, res'iding atv Cincinnati, Hamilton county, State of Ohio, have in- Vented a new and Vuseful Automatic Bobbin- Winder, of which the following is a specilica-- tion.

My invention relates to such appliances as are used to wind the bobbins of sewingmachines, and the object isto have this operation performed' automatically. It also provides for the automatic severance of the thread at the end of the operation coincident with the I attain these objects by the construction illustrated in the Figures 1, 2, and 3are front, side, and rear views, respectively. Parts of Fig. 2 are shown in section. Fig. 4 is a section at the line 4 4 of Fig. 2. i

6 is the arm of a sewing-machine. 7 is the' shaft; 8, the driving-pulley; 9, the belt; 10, the fly-wheel, and 11 the spool from which the thread is to be taken. The bobbin-winder is secured, preferably, to araised block, 12, on arm .6 by screws 13,` passing through lmember 14 of it. This member has a lateral extension, 15, from which rises a Vertical lug, 16, to which an oscillating member, 17, is pivoted by means of serew 18. Member 17 spreads out sidea spring-bearing, 19, and on the other a bearing, 20, for the'shaft of a friction-pulley, 21. Between these two bearings the bobbin 22 of the sewing-machine Shuttle is placed to be filled with thread. This ymode of attachscription. From about the center of member 17 extend forward'preferably two- -though one may be used-wings, 23,- which are united at their lowerends at 24. To and between these wings is pivoted a trigger, 25, which operates a spring-bolt, 26 27, which is located betwee said wings and slides in member 17.

28, another short bolt which also slides in member 17, is connected to spring-bolt' 26 by a downward extension, 29.

30 is an adj ustable catch secured to the slotted upright front portion of member 14.

againstV bobbin'22 between its flanges.

arm,n3l,and a flat horizontal leaf, l32, bearing To oneside of member 17, and between two lugs, v33, thereon, is secured an npright member, 34, which serves principally as a guide for thethread. The latter passes fromspool| llthrough two holes, 35, around-and between ,v

two Vdisk's, 36, pressed together by a spring, 37, and thence u'nderne'ath the horizontal portion of upright 34 to the bobbin. Holes 35V winds around the bobbin.

through between two shear-blades, 38 and39, one of which, 38, is secured to or integral with member 14, while the other, 39, is secured to upright 34.

6'0A anddisks 36v are merely for the-purpose of w p f giving'the desired tension to the thread as it My apparatus is secured to the arm the i i sewing-machine in the manner described, and

in such proximity to the belt 9 thatwhen the member 17 is pressed down,l pivoting on the f bolt 18, so that the spring-bolt 26 engages beneath the catch 30, vthe friction-pulley 21'will come into contact with the belt and be rotated thereby. The thread, having lbeen fastened to thebobbin prevously, during which operation leaf 32 may havev been' turned down and out of the way, commences now to fill up* the bobbin as it is revolved; by friction-pulley' 21.` `Plate 32 being held against the bobbin by spring 27 pressing against the bolts 26 and 28, and' the latter against eccentric 25, prevents any uneven accumulation of thread. As

the latter accumulates, plate or vleaf 32 is' slowly pressed outward, causing the trigger 25 to move bo1t'28, and with itV bolt 26, inward un-l til the latter becomes clear .of catch 30. "At

this moment spring 40 will be free to exert its force, and, bearing against portion 24 of oscillating member17, will swing this member and;

all parts attached to it with a sudden jerky. w

motion a short distance around its .'pivot 18. Thismovement. Will be suflicient to bring' friction-pulley 21 out of contact 'with belt 9, thus 5 stopping the mechanism, and also tbringthe two shear-blades 38 and 39 together, severing the thread. As thewindng goes on as long as bolt 26 isheld down bycatch 30, this may be regulated by lengthening orshorteningithe former by screwing it in or out of connectingpiece 29; also, if found preferable, the bobbinwinder may be attached to the table of the sewing-machine. i

5 I claim- 1. In an automatic bobbin-Winder, the combination of a stationary shear-blade, a stationary member, a swinging member pivoted thereto and having the bobbin-bearings, a

ro friction-pulley and a shear-blade, a stationary catch, a spring-catch co-operating therewith to hold the swinging member in such a position as to bring the friction-pulley into contact with the moving parts of the sewing-max5 chine, atrigger for Operating thespring-catch,

secured to the swinging member in such proximity to the bobbin as to be moved or lifted by the accnninlating thread thereon, and a spring acting on the said swinging member, 20 all as and for the'purpose described.

2. The combination of stationary member 14 15 16, shear-blade 38, pivot 18, catch 30, oscillating member 17 bobbin-bearings 19 20, friction-pulley 21, spring 27, bolt 26, connecting-piece 29, short bolt 28, trigger 25, arm 31, 2: leaf 32, upright 34, shear-blade 39, and spring 40, as and for the purpose explained.

3. The combination of stationary member 14 15 16, shear-blade 38, pivot`18, catch 30, oseillating member 17, bobbin'bearings 19 20, friction-pulley 21, spring 27, bolt 26, connecting-piece 29, short bolt 28, trigger 25, arm 31, leaf 32, upright 34, having holes 35, frictiondisks 36, shear-blade 39, and spring 40, all as and for the pnrpose explained. 35

In testimony of which invention I herennto set my hand.

CARL BELL.

Vitnesses:

OARL SPENGEL, AARON E. MooRE. 

